Two-dimensional (2D) nanomaterials are considered a rising star in diverse electrochemical technologies due to their special characteristics. We report here the design and synthesis of 2D titanium carbide/boron nitride nanocomposite via the sonochemical method. The successfully produced TiC/BN nanocomposites were characterized by in-depth electron microscopic and spectroscopic methods and served as an electrocatalyst for the determination of sulfadiazine (SFZ). The good electrocatalytic activity toward SFZ sensing with strong durability and good stability can be achieved by the TiC/BN-modified electrode. The unique structural characteristic of the TiC/BN electrocatalyst is in favor of accommodating more surface sites, improved conductivity, promoted charge-transfer ability, and enhanced surface area. For the proof of the above concept, the TiC/BN-modified electrode was characterized with low charge-transfer resistance (R_ct = 20 Ω), good peak potential separation (ΔE_p = 0.080 V), and good active surface area (A = 0.106 cm²). According to the measurement results of electrochemical response toward SFZ, the TiC/BN-modified electrode shows a trace-level limit of detection (3.0 nM), a large working range (0.01–44; 59–186 μM), good sensitivity (1.47 μA μM^–1 cm²), high selectivity and good reproducibility (4.11%). The proposed electrochemical sensor possesses good detection performance in monitoring human urine samples. The obtained results would shed light on the applications of electrocatalyst in electrochemical sensors.

中文翻译：

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碳化钛/氮化硼纳米复合材料的设计与原位合成：磺胺嘧啶传感器的电催化活性研究

二维（2D）纳米材料由于其特殊特性而被认为是各种电化学技术中的后起之秀。我们在这里报告通过声化学方法设计和合成的二维碳化钛/氮化硼纳米复合材料。成功制备的TiC / BN纳米复合材料通过深入的电子显微镜和光谱法进行了表征，并用作测定磺胺嘧啶（SFZ）的电催化剂。TiC / BN修饰电极可实现对SFZ感测的良好电催化活性，具有很强的耐久性和良好的稳定性。TiC / BN电催化剂的独特结构特征是有利于容纳更多的表面位点，改善的电导率，促进的电荷转移能力和增加的表面积。为了证明上述概念，R _ct = 20Ω），良好的峰电位分离（ΔE _p = 0.080 V）和良好的有效表面积（A = 0.106 cm ²）。根据对SFZ的电化学响应的测量结果，TiC / BN修饰的电极显示出痕量水平的检测极限（3.0 nM），工作范围较大（0.01–44; 59–186μM），灵敏度良好（1.47） μAμM ^–1 cm ²），高选择性和良好的重现性（4.11％）。所提出的电化学传感器在监测人类尿液样品中具有良好的检测性能。所得结果将为电催化剂在电化学传感器中的应用提供启示。